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Finding the Fourth Proportional to 64,939.84, 89,616.96 and 36,645.44

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Solution

The fourth proportional to 64,939.84, 89,616.96 and 36,645.44 is: 50,570.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    64,939.84 : 89,616.96 = 36,645.44 : x
  2. Step 2: Convert to fraction form
    64,939.84/89,616.96 = 36,645.44/x
  3. Step 3: Cross multiply
    64,939.84x = 89,616.96 × 36,645.44
  4. Step 4: Simplify right side
    64,939.84x = 3,284,052,930.66
  5. Step 5: Solve for x
    x = 3,284,052,930.66/64,939.84
  6. Step 6: Final answer
    x = 50,570.70

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.